Pro Python Deck Flashcards
What is a variable in Python? Provide an example.
A variable in Python is a reserved memory location to store values. For example, x = 5 assigns the integer value 5 to variable x.
How do you create a list in Python with mixed data types? Provide an example.
A list in Python can include mixed data types and is defined with square brackets. Example: my_list = [1, 'Hello', 3.14]
Explain the use of the if statement in Python with an example.
The if statement is used for conditional execution. For example: if x > 0: print('Positive') will print ‘Positive’ if x is greater than 0.
How can you handle exceptions in Python? Provide a code snippet.
Exceptions in Python can be handled using the try-except block. Example:
```python
try:
print(10/0)
except ZeroDivisionError:
print(‘Cannot divide by zero’)
~~~
What is a function in Python? Provide an example of a simple function.
A function in Python is a block of code which only runs when it is called. For example, def greet(): print('Hello!') defines a function that prints ‘Hello!’.
How do you iterate over a list in Python? Provide an example using a for loop.
To iterate over a list in Python, you can use a for loop. Example:
```python
for item in [1, 2, 3]:
print(item)
~~~
Describe how to import a module in Python and provide an example with the math module.
To import a module in Python, use the import statement. For example, import math allows access to mathematical functions.
How do you create a class in Python? Provide an example with a simple class.
A class in Python is created using the class keyword. Example:
```python
class Dog:
def bark(self):
print(‘Woof!’)
~~~
Explain dictionary comprehension in Python with an example.
Dictionary comprehension provides a concise way to create dictionaries. Example: {x: x**2 for x in (1, 2, 3)} creates a dictionary with numbers as keys and their squares as values.
What is the use of the append() method in lists? Provide an example.
The append() method adds an element to the end of a list. Example: my_list = [1, 2]; my_list.append(3) results in [1, 2, 3].
What does the built-in function abs do in Python?
The built-in function abs is used for various purposes, for example…
What does the built-in function all do in Python?
The built-in function all is used for various purposes, for example…
What does the built-in function any do in Python?
The built-in function any is used for various purposes, for example…
What does the built-in function ascii do in Python?
The built-in function ascii is used for various purposes, for example…
What does the built-in function bin do in Python?
The built-in function bin is used for various purposes, for example…
What does the built-in function bool do in Python?
The built-in function bool is used for various purposes, for example…
What does the built-in function bytearray do in Python?
The built-in function bytearray is used for various purposes, for example…
What does the built-in function bytes do in Python?
The built-in function bytes is used for various purposes, for example…
How to implement recursion in Python?
Here’s a basic example of how recursion can be implemented: …
How to implement inheritance in Python?
Here’s a basic example of how inheritance can be implemented: …
How to implement polymorphism in Python?
Here’s a basic example of how polymorphism can be implemented: …
How to implement encapsulation in Python?
Here’s a basic example of how encapsulation can be implemented: …
How to implement iteration in Python?
Here’s a basic example of how iteration can be implemented: …
How to implement enumeration in Python?
Here’s a basic example of how enumeration can be implemented: …
How to implement serialization in Python?
Here’s a basic example of how serialization can be implemented: …
How to implement deserialization in Python?
Here’s a basic example of how deserialization can be implemented: …
Describe how pip is used in Python.
pip is a tool in Python that allows you to…
Describe how PyPI is used in Python.
PyPI is a tool in Python that allows you to…
Describe how virtualenv is used in Python.
virtualenv is a tool in Python that allows you to…
Describe how Jupyter Notebook is used in Python.
Jupyter Notebook is a tool in Python that allows you to…
Describe how pytest is used in Python.
pytest is a tool in Python that allows you to…
Describe how Flask is used in Python.
Flask is a tool in Python that allows you to…
Describe how Django is used in Python.
Django is a tool in Python that allows you to…
Explain int data type in Python. Provide an example.
int is a data type in Python that… Example: …
Explain float data type in Python. Provide an example.
float is a data type in Python that… Example: …
Explain complex data type in Python. Provide an example.
complex is a data type in Python that… Example: …
Explain str data type in Python. Provide an example.
str is a data type in Python that… Example: …
Explain list data type in Python. Provide an example.
list is a data type in Python that… Example: …
Explain tuple data type in Python. Provide an example.
tuple is a data type in Python that… Example: …
Explain dict data type in Python. Provide an example.
dict is a data type in Python that… Example: …
Explain set data type in Python. Provide an example.
set is a data type in Python that… Example: …
Provide an example of adding operation in Python.
This example shows how to perform adding: …
Provide an example of subtracting operation in Python.
This example shows how to perform subtracting: …
Provide an example of multiplying operation in Python.
This example shows how to perform multiplying: …
Provide an example of dividing operation in Python.
This example shows how to perform dividing: …
Discuss the use of math module in Python.
The math module is typically used for… Example: …
Discuss the use of os module in Python.
The os module is typically used for… Example: …
Discuss the use of sys module in Python.
The sys module is typically used for… Example: …
Discuss the use of re module in Python.
The re module is typically used for… Example: …
Discuss the use of json module in Python.
The json module is typically used for… Example: …
Discuss the use of datetime module in Python.
The datetime module is typically used for… Example: …
What is the difference between append and extend in Python?
Here’s how append differs from extend: …
What is the difference between update and merge in Python?
Here’s how update differs from merge: …
How does return work in Python? Provide an example.
The return statement is used in Python to… Example: …
How does yield work in Python? Provide an example.
The yield statement is used in Python to… Example: …
How does break work in Python? Provide an example.
The break statement is used in Python to… Example: …
How does continue work in Python? Provide an example.
The continue statement is used in Python to… Example: …
What are decorators in Python? Provide an example.
Decorators are functions that modify the functionality of another function. Example: @decorator_func
def function(): pass
How do you handle exceptions in Python? Give an example.
Exceptions in Python are handled using try-except blocks. Example: try:
x = 1 / 0
except ZeroDivisionError:
print('Error')
Explain the use of the with statement in Python file handling.
The with statement simplifies exception handling by encapsulating common preparation and cleanup tasks in file handling.
Explain the use of break in Python loops.
The break statement is commonly used in loops to… Example: …
Explain the use of continue in Python loops.
The continue statement is commonly used in loops to… Example: …
Explain the use of pass in Python loops.
The pass statement is commonly used in loops to… Example: …
Describe the use of the print function in Python.
The print function is used to… Example: …
Describe the use of the input function in Python.
The input function is used to… Example: …
Describe the use of the len function in Python.
The len function is used to… Example: …
Describe the use of the max function in Python.
The max function is used to… Example: …
Describe the use of the min function in Python.
The min function is used to… Example: …
Describe the use of the sorted function in Python.
The sorted function is used to… Example: …
What is list comprehension in Python? Give an example.
list comprehension in Python is… Example: …
What is dictionary comprehension in Python? Give an example.
dictionary comprehension in Python is… Example: …
What is tuple unpacking in Python? Give an example.
tuple unpacking in Python is… Example: …
What is lambda function in Python? Give an example.
lambda function in Python is… Example: …
How do you use the os module in Python? Give an example.
The os module is used for… Example: …
How do you use the sys module in Python? Give an example.
The sys module is used for… Example: …
How do you use the datetime module in Python? Give an example.
The datetime module is used for… Example: …
How do you use the json module in Python? Give an example.
The json module is used for… Example: …
How do you use the re module in Python? Give an example.
The re module is used for… Example: …
What are the benefits of using numpy package in Python?
The numpy package provides…
What are the benefits of using pandas package in Python?
The pandas package provides…
What are the benefits of using matplotlib package in Python?
The matplotlib package provides…
What are the benefits of using seaborn package in Python?
The seaborn package provides…
What are the benefits of using scikit-learn package in Python?
The scikit-learn package provides…
How does append method work with lists in Python? Provide an example.
The append method is used with lists to… Example: …
How does extend method work with lists in Python? Provide an example.
The extend method is used with lists to… Example: …
How does insert method work with lists in Python? Provide an example.
The insert method is used with lists to… Example: …
How does remove method work with lists in Python? Provide an example.
The remove method is used with lists to… Example: …
How does pop method work with lists in Python? Provide an example.
The pop method is used with lists to… Example: …
Explain the difference between class and instance in Python.
The difference between class and instance in Python is…
Explain the difference between method and function in Python.
The difference between method and function in Python is…
Explain the difference between mutable and immutable in Python.
The difference between mutable and immutable in Python is…
Provide a use case for strings in Python.
A use case for strings in Python is…
Provide a use case for lists in Python.
A use case for lists in Python is…
Provide a use case for dictionaries in Python.
A use case for dictionaries in Python is…
Provide a use case for sets in Python.
A use case for sets in Python is…
Provide a use case for tuples in Python.
A use case for tuples in Python is…
What is recursion in Python? Provide an example.
Recursion in Python is a process in which a function calls itself as a subroutine. Example: def recurse(x): if x <= 1: return x; else: return x * recurse(x - 1) calculates factorial.
Describe how to create a virtual environment in Python.
To create a virtual environment in Python, use the venv module: python -m venv myenv creates a new virtual environment named myenv.
